Bump Tailwind CSS to 4.0.0-beta.9

Author: renovate[bot]

docs/package.json

@@ -77,7 +77,7 @@
     "@mui/internal-docs-utils": "^1.0.16",
     "@mui/internal-scripts": "^1.0.31",
     "@mui/internal-test-utils": "^1.0.24",
-    "@tailwindcss/postcss": "4.0.0-beta.2",
+    "@tailwindcss/postcss": "4.0.0-beta.9",
     "@types/chai": "^4.3.20",
     "@types/gtag.js": "^0.0.20",
     "@types/hast": "^3.0.4",
@@ -93,7 +93,7 @@
     "prettier": "^3.4.2",
     "rimraf": "^5.0.10",
     "serve": "^14.2.4",
-    "tailwindcss": "4.0.0-beta.2",
+    "tailwindcss": "4.0.0-beta.9",
     "unified": "^11.0.5",
     "webpack-bundle-analyzer": "^4.10.2",
     "yargs": "^17.7.2"

package.json

@@ -73,7 +73,7 @@
     "@next/eslint-plugin-next": "^14.2.22",
     "@octokit/rest": "^21.0.2",
     "@playwright/test": "1.49.1",
-    "@tailwindcss/postcss": "4.0.0-beta.2",
+    "@tailwindcss/postcss": "4.0.0-beta.9",
     "@types/fs-extra": "^11.0.4",
     "@types/lodash": "^4.17.13",
     "@types/node": "^18.19.69",
@@ -142,7 +142,7 @@
     "style-loader": "^4.0.0",
     "stylelint": "^16.12.0",
     "stylelint-config-standard": "^36.0.1",
-    "tailwindcss": "4.0.0-beta.2",
+    "tailwindcss": "4.0.0-beta.9",
     "terser": "^5.37.0",
     "terser-webpack-plugin": "^5.3.11",
     "tsc-alias": "^1.8.10",